// CODE SNIPPET
1612.3.1 Design Flood Elevations
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Where design flood elevations are not included in the flood hazard areas established in Section 1612.3, or where floodways are not designated, the building official is authorized to require the applicant to do one of the following:
- Obtain and reasonably utilize any design flood elevation and floodway data available from a federal, state or other source.
- Determine the design flood elevation or floodway in accordance with accepted hydrologic and hydraulic engineering practices used to define special flood hazard areas. Determinations shall be undertaken by a registered design professional who shall document that the technical methods used reflect currently accepted engineering practice.
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Building Code 2018 of Illinois > 16 Structural Design > 1612 Flood Loads > 1612.3 Establishment of Flood Hazard Areas > 1612.3.1 Design Flood Elevations